CVE-2026-108454: Microsoft Office PowerPoint buffer over-read information disclosure

CVE-2026-108454 · Severity: medium · CVSS 6.5 · Published 2026-10-15

Microsoft Office PowerPoint contains a buffer over-read vulnerability that allows an attacker to read sensitive information from memory. An attacker could exploit this flaw over the network to disclose confidential data such as document contents or other sensitive information stored in memory during PowerPoint processing.

Technologies: Microsoft Office PowerPoint. Vendors: Microsoft.

Quick answers

Is CVE-2026-108454 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-108454 being exploited in the wild.
How severe is CVE-2026-108454?
Medium severity, with a CVSS score of 6.5, published 15 October 2026.
Which products and versions are affected?
Microsoft Office PowerPoint.
Is there a fix for CVE-2026-108454?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-108454 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-108454?
Check whether you run Microsoft Office PowerPoint. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A buffer over-read in Microsoft Office PowerPoint allows out-of-bounds memory access, enabling information disclosure. The vulnerability requires network access but does not require user authentication or interaction. Exploitation results in unauthorized disclosure of information from application memory.

Affected products

  • Microsoft Office PowerPoint

Timeline

  • 2026-10-15: disclosed

References

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